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elevation at each monument (concrete base with brass cap) is in- scribed on the top and may be used for establishing water surface elevations directly in the field. Railroad and highway structures were field :3urveyed for the study by Gingery Associates STUDY AREA DESCRIPTION Drainage Basin Characteristics The study area on Beaver Creek near Brush, Colorado, iE: 10- cal:ed in Morgan County, approximately 90 miles northeast of Denver. Beaver Creek drains approximately 1,089 square miles within parts of Morgan County, Washington County, Adams County, Arapahoe County, Lincoln County and Elbert County, to the downstream study limit at Interstate 76. The headwaters of Beaver Creek are located. ap- proximately 80 miles upstream of Interstate 76 near Interstate 70, northwest of Limon, Colorado. The creek flow's in a northerly di- rection to the South Platte River, approximately 4-1/2 miles down- stream of Interstate 76. T\1e drainage ,lrea ranges in elevateion from approximately 6,000 feet above sea level in the basin head- wat:ers to elevation 4,216 at the downstream study limits and elevation 4,150 at the South Platte River. The limits of the Beaver Creek drainage area are shown on the Basin Map, Plate 1. The reach of Beaver Creek considered in this study includes the reach from Interstate 76 south, approximately 4 miles, teo the section line between Sections 13 and 24" 1'ownship 3 North, Range 56 l'lest. The limits of the detailed. study are shown on the Index Map, Plate 2. The Badger Creek drainage, directly west of the Beaver Creek drainage area, was also analyzed as a part of this study. 1'he Badger Creek drainage is a long and narrow basin draining approxi- mal:ely 277 square miles. This basin has its headwaters in Arapahoe County and drains through Adams County and Morgan County. 1'his basin was analyzed as a part of the flood plain information report -5-'